html {
    font-size: 16px;
    font-family: sans-serif;
}
body{
    font-family: sans-serif;
    line-height: 1.5;
}
@media screen and (min-width: 375px){
    html {
        font-size: calc(100% + 2 * (100vw - 375px)/ 39);
        font-size: calc(16px + 2 * (100vw - 375px)/ 39);
    }
}
@media screen and (min-width: 414px){
    html {
        font-size: calc(112.5% + 4 * (100vw - 414px)/ 586);
        font-size: calc(18px + 4 * (100vw - 414px)/ 586);
    }
}

